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Warning: the following questions are
“mathy”. Don’t worry about these if it
gets in the way of your enjoyment or
understanding of the lesson.

5. If a lever had a mechanical advantage
of 10 and you wanted to lift a 50 pound
watermelon, how many pounds of force
would you have to use for the effort?

7. Same hippo different units. Newtons
are the official unit of force. So to do this
officially, a 2000 pound hippo would take
about 9000 Newtons to lift. If you lift
that hippo 2 meters, how much work did
you do? Remember, work is force x
distance.

6. If a pulley had a mechanical
advantage of 500 and you wanted to lift
a 2000 pound hippo, how many pounds
of force would you have to use for the
effort?

8. One last question. This one’s a little
tricky. So if you lifted the hippo 2
meters, how much chain (because
string’s not going to cut it) did you pull?

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